LZ-BWP Bridge Deck Special Waterproof Coating
LZ-BWP bridge deck waterproof coating is a water-based waterproofing material formulated with high-quality heavy-duty asphalt as the base, modified by adding rubber and resin materials. It is primarily composed of polymer emulsion acting as the main film-forming substance, combined with various functional additives through a reactive process. This coating is specifically designed for bridge deck waterproofing, effectively preventing steel reinforcement corrosion caused by water渗透 into concrete bridge decks, thereby extending the service life of the bridge girders.
Category:
Asphalt Pavement Maintenance Materials
Product accessories:
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Product Description
Product Introduction
LZ-BWP bridge deck waterproof coating is a water-based waterproofing material formulated with high-quality heavy-duty asphalt as the base, modified by adding rubber and resin materials. It is primarily composed of polymer emulsion acting as the main film-forming substance, combined with various functional additives through a reactive process. This coating is specifically designed for bridge deck waterproofing, effectively preventing steel reinforcement corrosion caused by water seepage in concrete bridge decks, thereby extending the service life of the bridge structure.
Product Advantages
1. It exhibits broad temperature adaptability. During asphalt concrete construction, it remains stable—flowing neither at high temperatures ranging from 140°C to 180°C—nor becoming brittle under dynamic loads at low temperatures between -20°C and -30°C.
2. The material solidifies into a film-like block with excellent film-forming toughness. Thanks to the addition of chemical additives, the material can form a film rapidly, significantly reducing the time required for waterproofing construction on bridge decks.
3. Strong adhesion—thanks to the addition of penetrants and tackifiers in the formulation, the coating’s penetration ability and bonding performance are enhanced, allowing the pavement layer to be firmly integrated as a single unit with the bridge deck.
4. After applying the waterproof layer, the shear strength between the bridge deck and the pavement layer reaches 0.5 to 1.0 MPa; the base layer cracks by 2 mm, yet the coating remains crack-free.
5. Construction Practicality: Cold construction operations, high levels of mechanization and automation, non-toxic materials, and zero environmental pollution.
Parameter indicators
| Project |
Indicator Requirements |
|||
| LZ-BWP-1 Model |
LZ-BWP-2 Model |
|||
| Budget-friendly |
Enhanced |
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| Solid content /%, ≥ |
45 |
50 |
50 |
|
| Low-temperature flexibility / ℃ |
-15 |
-25 |
-25 |
|
| Heat Resistance / °C |
140 No dripping or sliding |
160 No Flowing or Sliding |
180 without dripping or sliding |
|
| Coating-to-cement-concrete bond strength, MPa, ≥ |
0.4 |
0.6 |
0.6 |
|
| Waterproofness / 0.3 MPa, 30 min |
Waterproof |
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| Tensile strength / MPa, ≥ |
0.50 |
1.00 |
||
| Fracture elongation/%, ≥ |
800 |
640 |
||
| Dry, 25°C |
Surface dry, ≤ |
4h |
20-minute no-stick |
|
| Practical action, ≤ |
8h |
40-minute non-stick |
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Applicable Conditions
1. Substrate preparation: Equipment such as deslagging machines, shot blasting machines, and milling machines can be used to treat the bridge deck. The surface must be free of laitance, smooth, clean, and free of standing water.
2. Detail Handling: Strengthening measures are applied to special areas such as bridge deck drainage outlets and corners of crash barriers.
3. Construction Preparation: Invert the LZ-BWP bridge deck waterproof coating mixing bucket and stir thoroughly. The product can be diluted slightly as needed.
4. Spray or roll-on application: Apply LZ-BWP bridge deck waterproof coating by spraying or rolling on several coats, ensuring the coating thickness meets the specified requirements. Typically, 3 coats are applied via spraying or rolling, with a construction dosage of 1–3 kg/m² and a coating thickness of either 0.5 mm or 2 mm.
5. Important Notes: Construction should be carried out at temperatures above 5°C. Do not work in rainy weather or under winds of Force 5 or higher. During storage and transportation, avoid direct sunlight. The recommended storage period is six months.
6. Finished product protection: No pedestrians or vehicles allowed before the work is fully completed.
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Hunan University Science Park, No. 186 Guyuan Road, Yuelu District, Changsha City, Hunan Province
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